"We may not all be born comedians, but most people are naturally humorous, says Doni Tamblyn, a comic-turned-trainer whose humorous techniques bring serious results at clients such as Chevron, Wells Fargo, and other Fortune 500 companies, universities, and government entities. While Laugh and Learn offers plenty to keep smiles on the faces of trainers and their students, it's not a collection of one-liners and knock-knock jokes. It's an enlightening...